I Believe that the impact maybe the pile of debris in front of the helo in the first pic. There seems to be some wreckage and possibly a radome askew atop the hanger. This would be an up the butt shot (worst possible scenario for their missiles and CIWS) for sure with the missile hitting the intersection of the hanger and the flight deck (largest RCS from astern for a plunging popup missile) That would explain the even keel (no actual hull penetration) and the persistant fire (maybe a helo in the hanger?) It would also do serious damage to the aft engineering spaces below the hanger.
As for a comment on the experience level of the IDF's Navy; They are, from what I saw of their seaman and officers, every bit as capable and professional as the rest of the IDF. The survival of that ship after a hit of this type speaks to that.
Yea I saw the article elsewhere that DEBKA put out and I think you're right. Obviously too that chopper was likely not there when it hit.